Wastewater testing apparatus and cleaning device

A cleaning device, comprising a wastewater detection apparatus, wherein the wastewater detection apparatus comprises:

• a housing, the housing being provided with an accommodating cavity therein, and the housing being provided with a water inlet, a water outlet, and a wiring hole that are in communication with the accommodating cavity;
• a detection tube, the detection tube being arranged in the accommodating cavity, and two ends of the detection tube being in communication with the water inlet and the water outlet, respectively;
• and
• a detection assembly, the detection assembly being arranged in the accommodating cavity, and the detection assembly comprising a transmitter, a receiver, a circuit board connected to the transmitter and the receiver, and a wire harness connected to the circuit board, the transmitter and the receiver are arranged oppositely on two sides of the detection tube, and the wire harness extends to outside of the housing through the wiring hole.